Muscle weakness and paralysis symptom

The underlying causes of muscle weakness or a paralysis symptom may include disorders of the upper or lower motor neuron, or both myoneural junction disorders myopathy endocrinological and metabolic causes psychosocial factors (psychogenic paralysis). It is important to disclose the cause because the different underlying diseases have different aetiologies and therapies.The various causes can at least roughly be differentiated on the basis of clinical examination.